7625 West New York Street

Indianapolis, Indiana 46214-4911 USA

Telephone: (317) 273-6960

Facsimile: (317) 273-6979

Order Desk Telephone: (800) 401-1723
Order Desk Facsimile: (800) 515-9254

E-mail: info@floteco2.com

Home Page   

FAQ Page

 

CGA Connector Specifications &

Recommended Colors for Medical Gases

The dangerous practices of using a DISS outlet connection for gases other than for those for which they are designed and/or removing pins from a pin index yoke assembly should not be tolerated.  To minimize the possibility of a user inadvertently or deliberately linking devices to gas sources not approved nor suited for specific uses, the Compressed Gas Association has published specifications for connectors.  These specifications require that both ends match before a connection can be achieved.  To ensure that the proper coupling is made, the mating parts are “keyed” to each other by means of pin index locations or matching thread diameters, sizes and or pitch.  The table below lists the common gases and the appropriate threaded or yoke and post valve connection for each gas. The United States and Canada color codes for gas cylinders are also listed.

 

Medical Gas CGA Yoke (High Pressure) Spec V-1 (US) CGA Nut & Nipple (High Pressure) Spec V-1 (US) DISS (Low Pressure) Spec V-5 (US) CGA Color Spec C-9 (U.S) Canada Color Spec
Carbon Dioxide CGA 940 CGA 320 1080 Gray Gray
Carbon Dioxide (> 7%) / Oxygen Mix  CGA 940  CGA 500     1080 Gray Gray
Carbon Dioxide (< 7%) / Oxygen Mix  CGA 880  CGA 280 1200                       Gray Gray
Gas Evacuation    2220
Helium  CGA 930 CGA 580  1060                       Brown                   Brown
Helium (> 80%) / Oxygen Mix CGA 930 CGA 500   1060 Brown                   Brown                  
Helium (< 80%) / Oxygen Mix "Heliox" CGA 890 CGA 280 1180 Brown                   Brown                  
Nitric Oxide CGA 660
Nitric Oxide / Medical Gas Mix      CGA 626
Nitrogen CGA 960 CGA 580 1120 Black Black
Nitrous Oxide CGA 910 CGA 326 1040 Blue Blue
Nitrous Oxide / Oxygen Mix (47.5 to 52.5%) CGA 965 CGA 280 2020 Blue                       Blue                      
Medical Air (≤ 3000 psi) CGA 950 CGA 346 1160 Yellow Black & White
Medical Air (3001 to 5500 psi)    CGA 347  1160 Yellow Black & White
Medical Gas Mix CGA 973 CGA 500 1020
Oxygen CGA 870 CGA 540 1240 Green White
Vacuum 1220 White Yellow

M-Gas Spec.doc ( 10-16-06 )